Offroad Trailblazers and Envoys

How to upgrade to EXT/SS Brake Upgrade

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by mikekey » Sat Sep 14, 2013 9:29 am

How to upgrade to EXT/SS Brake Upgrade

INTRO[/size]

With the new heavier and larger tires, my stopping distance increased. Or, more to the point. When some A*hole pulled right out in front of me, I'd have a HEART ATTACK.

So I decided to do the EXT/SS brake upgrade. You have two options for upgrading your brakes. You can opt to purchase the SSBC Brake upgrade kit. This kit includes 14" rotors and 4 piston brakes, for some seriously hard core breaking. Some might argue that's overkill for an offroad vehicle. I don't think you can ever over do braking personally. The down side is that those 14inch rotors and calipers may not fit in anything smaller than an 18" rim or with a ton of back spacing. Currently only the SS guys seem to be running these, and no one has posted measurements that I can find or tried running it with 17inch rims and backspacing.

Oh yeah, they're expensive. The price tag os the SSBC kit is pretty big, at close to 2 grand, you've got to be committed.

The second option is the SS/EXT Rotor Swap. Both the EXT and SS had larger 13inch front rotors compared to the stock rotors on non v8 SWB 12.4" rotor.

The cost is of this swap is relatively cheap, you can get it done for under $200.00 with a visit to the junk yard and depending on the rotors/pads you purchase.

WHAT YOU WILL NEED

You will be able to reuse your stock calipers. They're the same size.

You can get these from Rock Auto, our site sponsor.
Caliper mounting brackets: Cardone A-1: Part# 14-1143 Front Right/Left (order 2)
Caliper Guide Pin Kit brackets CARLSON Part # H5093
Caliper Guide Pin boot: CARLSON Part # 16143

EXT/SS Rotors and a set of brake pads. It's up to you what you get. I referenced a 2006 Chevy Trailblazer SS.
BE CAREFUL WITH EBAY. A few of the rotor/pad combos on ebay listed as being for the EXT/SS also label themselves as being for the SWB vehicle and in fact may be the wrong size rotor. So do diligence is important.


DOING THE SWAP

This guide makes two assumptions.
#1 You are mechanically inclined and can jack the vehicle on your own and remove the tires.
#2 You know how to change you brakes already and can remove the caliper and replace the pads.

To get started pick a side and remove the wheel and the caliper along with the pads. You can set the caliper aside out of the way.

Then you'll have to remove the two 17mm bolts holding the bracket in place, as shown here:
Image

After the bracket is off, the next step is to remove your rotor. If you end up like me, you'll have these annoying metal tabs which have to be removed first. Then the rotor will pull straight off.

Image

After that, you can put your new rotor on, and then install the new bracket where you removed the old one using the new caliper guide pins and boot kit.

Image

It really is that simple. Next up, replace your old pads, now is a good time if you want to paint your calipers. I decided why not.

Re-install your caliper using the new bolt kit. A little blue loc-tite might be a good idea.

Image

And that's all. Incredibly simple, and an effective upgrade.

Image

You might be thinking, is there really that much improvement in stopping? The answer to that question is a resounding YES. And I am not going to debate the merits of the cross-drilled/slotted rotors. I already know. :cheers:


Good Luck :thumleft:
Last edited by mikekey on Fri Jun 23, 2017 4:46 pm, edited 6 times in total.
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by dvanbramer88 » Sat Sep 14, 2013 11:25 am

No pictures...
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by mikekey » Sat Sep 14, 2013 11:55 am

They're there. I'm upgrading my server, so they may go up and down.
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by Trail X » Sat Sep 14, 2013 6:24 pm

Thanks for posting this Mike. Do you have part numbers for the larger brackets?
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by jonbo2002 » Sat Sep 14, 2013 9:04 pm

Great write up Mike, and for the cheap asses like me you can go to a junk yard and get the brackets and bolts. Mine were from an 08 SS I just reused my calipers and bought new rotors!
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by jonbo2002 » Sat Sep 14, 2013 9:08 pm

oh and to show spacing difference on 17s without spacers
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by Opeth » Sat Sep 14, 2013 9:48 pm

If mike doesn't post the caliper bracket #'s I will when I get home tomorrow. I ordered mine from an 06' TB 5.3l which were also the same # for an 06' TB ext. Left and right sides use the same part number.
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by JCrayton99 » Sat Sep 14, 2013 10:48 pm

One of these days Ill post a good photo of mine. I managed it with a 16" rim. BARELY.
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by jonbo2002 » Sun Sep 15, 2013 8:56 am

rockauto 04 trailblazer right 141161 and left 141159 a-1 cardone parts
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by TBYODA » Sun Sep 15, 2013 11:02 am

JamesDowning wrote:Thanks for posting this Mike. Do you have part numbers for the larger brackets?
part number next to each item would be good and this could make nice sticky.
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by Trail X » Sun Sep 15, 2013 1:57 pm

jonbo2002 wrote:rockauto 04 trailblazer right 141161 and left 141159 a-1 cardone parts


Those are the ext brackets?
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by mikekey » Sun Sep 15, 2013 3:30 pm

I used Cardone part 14-1143
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by Opeth » Sun Sep 15, 2013 7:28 pm

mikekey wrote:I used Cardone part 14-1143


Those are the ones I have as well.
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by Trail X » Mon Sep 16, 2013 8:20 am

Stickied.

Mike, see if you can roll through your first post and add any part numbers you can (like Robert said), in order to make future visits easier.
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by jonbo2002 » Mon Sep 16, 2013 8:45 am

JamesDowning wrote:
jonbo2002 wrote:rockauto 04 trailblazer right 141161 and left 141159 a-1 cardone parts


Those are the ext brackets?


shows to be 129" wheelbase
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by mikekey » Mon Sep 16, 2013 9:33 am

I'll update this with the parts and socket sizes you'll need this afternoon. I have a few additional photos too like jonbo2002 that I originally excluded that I'll add and improve the format for newbies.
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by HARDTRAILZ » Mon Sep 16, 2013 9:56 am

Brackets
Bolts
Rotors
All that is actually different correct?
I hate to advocate weird chemicals, alcohol, violence or insanity to anyone...but
they've always worked for me.
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by mikekey » Mon Sep 16, 2013 9:59 am

The pads are slightly larger too I noticed. However you are correct that is all that is different.
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by HARDTRAILZ » Mon Sep 16, 2013 10:05 am

I am wondering if the difference you felt was actually the size or the drilled and slotted vs standard rotors. I noticed a big improvement when I went to D/S in the standard size rotors.
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by jonbo2002 » Mon Sep 16, 2013 10:14 am

I notice a difference and didn't get drilled and slotted. I think with larger tires both should be done to get maximum performance.

Also my caliper bolts went from a 17mm socket to a 13mm
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